A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Paul Dolkas
Date: 2015 Dec 28, 21:37 -0800
I gave up trying to open mine up – the threaded rings seemed to be welded to the housing. Perhaps they were glued shut to improve sealing… Is there any magic solvent that will help?
From: NavList@fer3.com [mailto:NavList@fer3.com] On Behalf Of Robert Swartz
Sent: Monday, December 28, 2015 10:55 AM
Subject: [NavList] Re: Fluids for Bubble Sextants and Sealing Methods
When I restore Link A-12 bubble sextants, I follow the manufacturer's specifications and use xylene. The bubble chambers must be clean internally and the white lead oxidation around the seals should be scraped off. Then you can paint a ring of clear shellac to insure seal. Also be sure to seal the filler plug bristol screw after tightening. Don' forget to insert the ball bearing in the filler port.